...again - Part 2

I continued sucking and his cock began to respond. It began to grow in length and girth as it usually does. While I was using my mouth I was also using my hand to cup his balls and fondle them gently. Then, I slid my mouth off his semi hard penis and licked my way down its shaft to the base and onto his ball sac. I began to lick his balls and actually got around behind them before he stopped me, but gently this time, with, "it tickles...stop!"